A 5-year-old boy brought a heroin-filled jacket to his kindergarten class for show and tell, authorities said Tuesday.

Detective Keith Bryant, a Bridgeport Conn. police spokesman, told the Connecticut Post that the boy arrived at school Monday carrying his stepfather’s jacket. During show and tell, the kindergarten student pulled out 10 plastic bags, each containing heroin. The teacher immediately grabbed the bags and alerted the principal, who called the police.

The stepfather, Santos Roman, 35, was arraigned Tuesday and charged with risk of injury to a minor, possession of narcotics, sale of narcotics and possession of narcotics within 1,500 feet of a school.

Bryant also reported that shortly after the show-and-tell incident, Roman arrived at the school searching for his son. He found the jacket and ran out of the school with it, but the police soon took Roman into custody.

Bridgeport Superintendent Paul Vallas told MSNBC that the Department of Children and Families placed the boy with his grandmother, despite his mother coming to the school to take him home.

Vallas praised the efficiency of the initial response to the incident. “I think everybody operated like clockwork,” he said.